same logic board in all A1181 machines?

i purchased two systems, both A1181 machines. one had a functional logic board but screen and clam shell were toast. the other only had the outer case with functional screen. i tried taking the clam shell from the one machine and attaching it to the one with the functional logic board. everything went well until the end when i tried to connect the three wires on the left side of the screen to the logic board. there is a gray and black single wire that connect to the video card i am guessing, and the last connection, which is comprised of 4 small black wires doesn't seem to match the connection on the logic board.

i am wondering if there are logic boards specific to different macbooks. having the same model number is a little confusing. i also found the keyboard connection didn't fit as well as most keyboard connections i have made in the past. i was able to turn the machine on with the power button, but without connecting the last 4-wire connection i didn't get anything on the screen. just a chime.

if anyone can give me a few tips it would be much appreciated.
thank you in advance.

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